Stop swimming against the tide and accept what most of the rest of
the world does.

While it adds an annoying depth to the actual source code, it makes
the root directory nicer (no more 'test-res' dirs), means we don't
have to override the gradle config, and makes it nicer to work in
IDEA 2016.1.

Java 8 introduces a sane API for dates; to store datettimes
we should now be using LocalDateTime.

Assert that things aren't randomly null. This will make it easier
to fix than trying to hunt down obscure errors in the client caused
by nulls here.

Remove CallbackManager hacks.

Change-Id: I1d81392650d8193503621b2e69fbe66cd0eb736a
Reviewed-on: http://gerrit.dmdirc.com/4058
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: Iad5e74e45bb052f65b761ce8e334b571838edc10
Reviewed-on: http://gerrit.dmdirc.com/2978
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: I1c711ca0525af9a78cbd7c07876eaf6cc91c1434
Reviewed-on: http://gerrit.dmdirc.com/2604
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: Ie7236e561d04eed00576a8ff6b43228106d3bff5
Reviewed-on: http://gerrit.dmdirc.com/2288
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Issue: CLIENT-48
Change-Id: I6af72c73a4370f5a49315a7a9789a18ea199a888
Reviewed-on: http://gerrit.dmdirc.com/2201
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I4a4bd2f45c18759bced41fc0aec1e570f11dfa6f
Reviewed-on: http://gerrit.dmdirc.com/2073
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Change-Id: I4a6c51789e37e0f96967344c98010ee7ff760506
Reviewed-on: http://gerrit.dmdirc.com/1723
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>

Change-Id: Ia9c4b46b63cd731db004f490bf460d98c99791a6
Reviewed-on: http://gerrit.dmdirc.com/1209
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>
Automatic-Compile: Shane Mc Cormack <shane@dmdirc.com>

Change-Id: I581861c8c8743cb835c45d128c4b4768372de807
Reviewed-on: http://gerrit.dmdirc.com/201
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>
Tested-by: Shane Mc Cormack <shane@dmdirc.com>